Artifact Details Title Presentation Disc Catalog Number 102718136 Type Physical object Description Object consists of a sample hard drive disk showing physical characteristics of IBM disc drives from model 350 RAMAC of 1955 to 3390-3 of 1991.. The disc is enclosed in a special envelope. Manufacturer IBM Place Manufactured USA Dimensions overall: 1/8 in x 5 1/8 in x 5 1/8 in Category Ephemera/other Lot Number X5736.2010